WO2009040278A2

WO2009040278A2 - Method and device for winding a material web

Info

Publication number: WO2009040278A2
Application number: PCT/EP2008/062339
Authority: WO
Inventors: Werner Leitenberger
Original assignee: Voith Patent Gmbh
Priority date: 2007-09-24
Filing date: 2008-09-17
Publication date: 2009-04-02
Also published as: WO2009040278A9; DE102008000042A1; EP2205512A2; CN101873984A; EP2205512B1; WO2009040278A3

Abstract

The invention relates to a method for winding a material web (12), particularly a paper, cardboard, or tissue web, on a reel (14), wherein the material web (12) is fed to the reel (14) by means of a drum (16), and a winding gap (20) is formed between the drum (16) and the reel (14) or the winding (18) to be formed thereon, and a line force is generated therein. The direction of action of the line force generated in the winding gap (20) is held at least substantially constant during the entire winding buildup.

Description

Method and device for winding a material web

The invention relates to a method for winding a material web, in particular paper, cardboard or tissue web, on a spool, wherein the web fed to the spool via a carrier drum and between the carrier drum and the spool or the winding to be formed thereon a winding nip and in this a line force is generated.

Furthermore, the invention relates to a suitable for carrying out this method winding device according to the preamble of claim 6 and a system for driving the spool in such a winding device.

The previously known methods and winding devices or rollers of the type mentioned have a number of features that have a detrimental effect on the winding structure in pressure-sensitive papers, such as tissue in particular:

- Due to changes in the position of the spool during the course of the winding line force deviations arise across the machine (cross machine direction, CD), that is transverse to the direction of web travel, and on the winding diameter. The main reasons for this are a different spool deflection, frictional influences, a varying line force direction with constant contact pressure and varying self-weight effects.

- The transfer of a pressing system or the primary pressing to a second pressing system or the secondary pressing causes line force peaks. - -

The transfer from a first center drive or primary center lift to a second center drive or secondary center drive can have a negative effect on the torque curve and thus on the winding structure.

Thus, in the previously known roller concepts in the primary winding, the line force generated in the winding nip is influenced by the drum weight, which leads to a displacement of the primary layers, a corresponding loss of volume and a correspondingly higher rejects. In addition, due to the Tambourdurchbiegung line force deviations in the transverse direction. If the drum weight is compensated, for example, by a force attack on the edge in the primary winding, the tambour bend line results in a higher line force in the machine center. In the secondary winding, a reverse effect occurs. When the power is transferred from the primary to the secondary winding, a line force peak occurs, through which the primary layers can be pushed, which in turn leads to a corresponding loss of volume and a higher rejection. In addition, in the area of pressure cylinders and pivot points as well as by the rolling resistance on the running rail, frictional influences can occur that cause linear force errors. This results in undefined line forces, and there is a risk of crushing and volume loss. In addition, often the drum is driven by the carrier drum. Such a peripheral drive requires a minimum force lines, so that it can come here again to corresponding volume losses.

In a winding device known from EP 1 460 010 A2 of the type mentioned above, electric motors are provided for driving the drum, which can be coupled without gear directly to the drum or a rotary drive connection associated therewith. In this case, the spool can be coupled in a primary winding phase with a first and in a secondary winding phase with a second motor. Furthermore, a force transfer from the primary pressing to the secondary pressing is required, which results in a line force peak in the winding gap - -

can bring, which can again lead to a displacement of the primary layers, a corresponding loss of volume and a correspondingly higher rejects.

In a winding device known from WO 03/053827 A1 the force peak occurring during the transition from the primary winding phase to the secondary winding phase is counteracted inter alia by the fact that the carrier drum is mounted axially inside and independent of the primary arms and performs a corresponding fault diagnosis based on the measured line forces becomes.

It is also already known a winding device with two center drives, in which a respective drum during the entire winding structure can be pressed on only one of the two Anpresseinheiten to the carrier drum and on the other pressing the first Tambour is pressed against the Anpresstrommel. In this case, however, a respective tambour is guided over its bearing on horizontal rails, which are arranged above the upper edge of the carrier drum. The disadvantage here is that the effective direction of the line force changes with the winding diameter, which is very unfavorable, especially in the Anwickelphase. In addition, the rolling resistance of the drum bearings on the rails and the friction in the hydraulic cylinders provided for pressing the drum on the carrying drum cause relatively large and undefined line forces with a gain of about three times. A respective new or empty bambour can only be inserted if the full tambour already has a correspondingly large diameter. In an earlier change, the wound drum must be guided away from the carrier drum, which means that a free winding is required or the web must be re-listed. The real reason for a center drive is to wind the web with as little line force as possible to maintain the volume. Due to the unfavorable effective direction of the line force, the advantage of the center drive is mostly nullified in the present case. Apart from the extremely unfavorable contact conditions in the Anwickelphase gives way - -

the line force direction thus strongly on the load direction. The component acting as a line force is thus difficult to control.

The invention has for its object to provide an improved method and an improved device of the type mentioned, in which the aforementioned disadvantages are eliminated. In addition, an optimized system for driving the spool in the winding device should be specified.

With regard to the method, this object is achieved in that the effective direction of the line force generated in the winding nip is maintained at least substantially constant throughout the winding structure. Preferably, the spool and thus the winding to be formed thereon are pressed against the carrier drum during the entire winding structure via one and the same pressing unit. It is particularly advantageous if the spool is driven during the entire winding structure on one and the same center drive system.

Such a winding method, which is wound with a constant line force direction and only one Anpresssystem and only one center drive per winding roller, is particularly suitable for winding tissue paper. It is especially ensured that the position of the main cylinder, that is in particular the vertical position relative to the carrier drum, remains constant over the entire winding process and no reversal of the drum bending line occurs and self-weight effects are excluded on the line force. Correspondingly, the line force is kept constant across the machine (cross machine direction, CD) and over the winding diameter. Since the entire winding structure takes place with only one Anpresssystem, there is no power transfer. Since the entire winding structure is done with only one center drive system or center drive, also eliminates the usual torque transfer.

Preferably, the drum is guided so that the two mutually parallel axes of the spool and the carrier drum during the entire winding process. - -

construction in one and the same plane, advantageously remain in a horizontal plane.

With respect to the winding device, the object is achieved in that the tambour and thus the winding to be formed on the so

Carrying drum pressed and the drum is guided so that the effective direction of the line force generated in the winding nip is kept at least substantially constant throughout the winding structure. In this case, the spool and thus the winding to be formed thereon can be pressed against the carrier drum preferably via one and the same pressing unit during the entire winding structure.

It is particularly advantageous if the drum during the entire

Winding structure can be driven via one and the same center drive system.

The spool is advantageously guided in such a way that the two mutually parallel axes of the spool and the carrying drum remain in one and the same plane, preferably in a horizontal plane, during the entire winding structure.

Due to this design, it is particularly ensured that the material web can be wound with the lowest possible and uniform contact force over the entire winding process and with the least possible web tension. This winding device is thus particularly suitable for pressure-sensitive papers such as tissue in particular. In this case, it is also ensured in particular that the tissue volume generated by complicated processes such as creping, TAD (through-air drying) or the ATMOS drying technology remains largely intact. The entire winding structure is carried out with only one Anpresssystem. There is no power transfer required during the winding process. The position of the spool relative to the carrier drum remains constant over the entire winding process. There is no reversal of the reel bending line and thus no change in the line force distribution in the transverse direction. In addition, the entire winding structure is center-driven, so that the line power level is no longer determined by the peripheral drive. The drum can be used in supports on linear guides. - -

be led gene, whereby the frictional resistance is reduced to a minimum and an extremely sensitive line force control is possible.

According to an expedient practical embodiment, the winding device comprises two movable pressing units, by means of which the spool and thus the roll to be formed can be pressed against the carrying drum and to which a center drive is associated, which comprises an electric motor provided with a rotor, coaxial with Tambour can be positioned in association with an axial end region of the main cylinder and by moving the center drive in the axial direction of the main cylinder and / or by a relative movement between a Drehanthebsanschluss the center drive and its rotor without gear directly coupled to the spool or its associated rotary drive connection is, wherein a respective drum during the entire winding structure only one of the two Anpresseinheiten can be pressed against the carrier drum and on the other pressing unit until the next Tambour is pressed against the carrier drum again, a respective Tambou r is performed during the entire winding structure along a through the support drum axis and perpendicular to this extending linear path and the pressing unit in question during the entire winding structure to be moved in parallel, the spool during the entire winding structure by the respective Anpresseinheit associated center drive can be driven.

The spool can be guided in particular horizontally, in which case the two Anpresseinheiten are each moved horizontally.

Preferably, the two pressing units each comprise two contact slides, one of which is arranged on the driver's side and the other on the drive side. In this case, the center drive in question is assigned to one of the two contact carriages. The Anfahrschlitten can be performed on preferably horizontal guide rails. Appropriately, they are guided by means of linear roller guides on the guide rails. - -

According to an expedient practical embodiment, a driver-side and a thebseitseitige staging are provided, wherein one of the two Anpressschlitten a respective Anpresseinheit on the inside of one of the two chairs and the other of the two Anpressschlitten on the outside of the other chair each guided on guide rails and the center in question - Drive is assigned to the outer contact slide.

It is also particularly advantageous if a guide carriage which can be moved perpendicular to the direction of travel of the contact carriage and perpendicular to the spool axis is provided for centering the respective drum carrier in a respective contact carriage, wherein the guide carriage can in particular be vertically movable.

In this case, the guide carriage is preferably mounted on the contact carriage via a linear roller guide.

The guide carriage can be moved via at least one actuating element, in particular at least one hydraulic cylinder / piston arrangement.

The carriage pair of a respective pressing unit can be assigned a carriage drive, which acts on the contact carriages via drive elements, preferably the carriage drive arranged on the driver or drive side via a first drive element arranged on the same side as the carriage drive on the contact carriage provided on this side and acts on the provided on the other side drive carriage via a transverse source and arranged on the other side drive element.

Appropriately, in this case the carriage drive of one of the two Anpress- slide pairs or Anpresseinheiten on the driver's side and the carriage drive of the other Anpressschlittenpaares or Anpresseinheit on the drive side is arranged. - -

The drive elements may comprise, for example, drive chains. In this case, each drive chain is preferably assigned its own chain tensioner.

However, the drive elements may, for example, also comprise toothed belts or the like.

It is also conceivable, for example, such an embodiment, in which the contact slide can be driven via at least one spindle drive with transverse shaft.

In accordance with a further advantageous embodiment variant of the device according to the invention, a single drive is assigned to the contact carriages, wherein the contact carriages can be driven, for example, via a rack or the like.

Preferably, the winding device comprises a particular electronic control and / or regulating device.

Advantageously, an angle encoder connected to the control and / or regulating device is assigned to control and / or regulate the drive carriage movements and / or to position the drive carriages in each carriage drive. In particular, the respective angular position and the respective rotational speed of the rotor of the relevant drive can be detected by means of such an angle encoder.

It is also advantageous if a respective center drive is displaceably guided on the respective contact carriage or the guide carriage associated therewith, in particular via a linear roller guide in the transverse direction.

The carrier drum is preferably mounted on connected to the control and / or regulating device measuring cells, via which the force is measurable, with the - -

Tambour or the winding to be formed on the winding drum is pressed. The measured values obtained can then be used in particular for controlling and / or regulating the line forces occurring in the winding nip.

Conveniently, a movable lift arms comprehensive Tambourlift is provided for the transfer of a respective new drum from a arranged on the winding device reel magazine to the correspondingly positioned guide carriage of a respective Anpressschlittenpaares or Anpresseinheit.

The Tambourlift can be assigned a Tambourstarter to accelerate a respective new Tambour before handing over to the respective Anpresseinheit or their guide carriage.

It is also advantageous if the driver side and the theft-side staging are provided in an outlet region with rails inclined relative to the horizontal, to which the finished and in particular braked winding can be placed in order to supply it to a stop device.

Preferably, the control and / or regulation of the winding structure is at least partially on the force with which the spool or the winding to be formed thereon is pressed against the carrier drum.

Preferably, the control and / or regulation of the winding structure can at least partially take place over the path traveled by the spool or by the winding to be formed thereon.

According to a preferred practical embodiment of the device according to the invention, the control and / or regulation of the winding structure takes place via the path covered by the spool or by the winding to be formed thereon only from a prescribable winding diameter. Before that, the control or regulation z. B. via the contact force. - -

In certain cases, it may be advantageous if the guide carriage provided only for guiding the spool and the spool during the winding structure is supported by rails.

The method according to the invention and the winding device according to the invention can be used with particular advantage in particular for winding tissue webs.

According to a further aspect, the invention relates to a system for driving a spool in a winding device, in which a material web, in particular paper, cardboard or tissue web is wound on the spool, the web is fed to the spool via a carrier drum and between the carrier drum and a winding nip is formed on the drum or the winding to be formed thereon.

Center drives in the secondary area of the paper machine reel are so far unilaterally realized on the drive side in the normal case. The drive unit has so far been mostly performed on a separate subset on linear guides. In order to ensure an alignment of the drive train with the drive coupling of the main cylinder, the drive unit in the previously known drive systems is usually mechanically coupled to the secondary arm or secondary carriage by a driver.

These known drive concepts have a number of disadvantages. Thus, the mass of the drive unit, which can be between about 1,200 - 6,700 kg depending on the machine width and drive power, must be moved with a movement of the secondary arm or sled. This brings considerable forces, in particular during acceleration or deceleration, which act on the drive-side secondary arm or spillways and thus influence the line force between the spool and the carrier drum in the secondary winding on one side. For very sensitive products such as soft tissue papers - -

Line forces <1 kN / m required so as not to destroy the volume. However, these requirements can not be realized with the conventional paper machine roller concepts in which the line force in the secondary winding is generated by the secondary arm. It is here a separate management of the drive unit may be required with its own subset. In addition, there is a relatively large amount of space.

The invention is therefore also based on the object to provide an improved drive system of the type mentioned, in which the aforementioned disadvantages are eliminated. In this case, this drive system should be suitable in particular for use in the winding device according to the invention. In addition, the mass of the respective drives should be as low as possible. The space requirement for the drives should be reduced to a minimum.

This object is achieved by the features of claim 39.

It is thus proposed a system for driving a spool in a winding device, in which a material web, in particular paper, cardboard or tissue web is wound on the spool, the web is the spool via a carrier drum can be fed and between the carrier drum and the spool or the winding to be formed thereon, a winding nip is formed, this drive system comprising at least one center drive having a rotor provided with an electric motor, coaxial with the drum in association with an axial end of the drum positionable and by moving the center drive in the axial direction of the Tambours and / or by a relative movement between a Drehanthebsanschluss the center drive and the rotor without gear directly to the spool or a rotary drive connection associated therewith can be coupled. Such a drive system is particularly suitable for use in the winding device according to the invention. - -

According to a preferred embodiment of the drive system according to the invention, the center drive is combined with a contact slide, via which the spool or the winding to be formed thereon can be pressed against the carrying roller, wherein the center drive and the contact slide are guided together.

The center drive can in particular be combined with a secondary carriage assigned to a secondary winding area. In principle, a center drive is also conceivable which is combined with a secondary carriage assigned to a primary winding area.

The rotary drive connection associated with the spool can, for example, comprise a drive coupling or bell.

The rotary drive connection of the center drive comprises, for example, a drive star.

The rotor of the center drive, for example, comprise a hollow motor shaft. In this case, the center drive can be coupled for example by a relative movement between the drive star and the hollow motor shaft with the spool or the associated rotary drive connection. As already mentioned, however, it is also possible in principle to engage the drive star by correspondingly moving the entire center drive into the rotary drive connection assigned to the drum and / or to disengage it again.

In certain cases, it may be advantageous if a center drive is provided both on the driver's side and on the drive side.

Thus, for example, a symmetrical introduction of force via the two-sided arrangement of the drives is also possible. However, such embodiments are also conceivable in which the two center drives arranged on different sides have a different engine characteristic. In the latter case, for example, such an embodiment is conceivable in which one of the two - -

Center drives a relatively smaller torque at relatively higher speeds for a predetermined lower winding diameter range and the other center drive generates a relatively larger torque at relatively lower speeds for a predetermined upper winding diameter range.

According to an expedient practical embodiment of the drive system according to the invention, at least one center drive is assigned to a secondary winding area.

Alternatively or additionally, at least one center drive can also be assigned to a primary winding area.

According to an expedient practical embodiment, at least one center drive is assigned to each of a primary winding region and a secondary winding region.

The drive system according to the invention can be used with particular advantage in a winding device for winding a tissue web. In particular, it can also be provided for use in the winding device according to the invention.

The invention will be explained in more detail below with reference to exemplary embodiments with reference to the drawing.

Show it:

Figure 1 is a schematic side view of an exemplary embodiment of the winding device according to the invention;

Figure 2 is a schematic plan view of the winding device according to Figure 1;

Figure 3 is a schematic front view of the winding device according to Figure 1; and

Figure 4 is a partial schematic representation of an exemplary embodiment of the drive system according to the invention. - -

Figure 1 shows a schematic side view of an exemplary embodiment of a device 10 for winding a web 12 on a spool 14, wherein the material web 12 to the spool 14 via a carrier drum 16 can be fed and between the carrier drum 16 and the spool 14 and the thereto forming winding 18 a winding nip 20 is formed.

In this case, the spool 14 and thus the winding 18 formed thereon can be pressed against the carrier drum 16 and the spool 14 is guided so that the effective direction of the line force generated in the winding gap 20 is kept at least substantially constant throughout the winding structure. The drum 14 and thus the winding to be formed thereon are expediently pressed onto the carrier drum 16 via one and the same pressing unit during the entire winding structure. Preferably, the spool 14 is driven during the entire winding structure via one and the same center drive system. In this case, the spool 14 is guided in particular so that the two mutually parallel axes of the spool 14 and the carrier drum 16 during the entire winding structure remain in one and the same plane, preferably in a horizontal plane.

For this purpose, the winding device 10, two movable Anpresseinheiten 22, 22 '; 24, 24 ', via which the spool 14 and thus the winding 18 to be formed thereon, can each be pressed against the carrier drum 16.

The two pressing units 22, 22 '; 24, 24 'may each have a center drive 26; 28 (see also Figures 2 and 3) to be associated, which comprises a rotor provided with an electric motor.

As can be seen in particular from Figures 2 and 3, in which the winding device 10 in a schematic plan view and a schematic

Front view, the center drives 26; 28 each coaxial with

Tambour 14 in association with an axial end region of the spool 14 positio - -

nierbar and by moving the center drive 26; 28 in the axial direction of the main cylinder 14 and / or by a relative movement between a rotary-Antsbsanschluss 30 of the center drive 26; 28 and its rotor without gear directly with the spool 14 or a rotary drive associated with this 32 can be coupled.

In this case, a respective spool 14 during the entire winding structure only one of the two Anpresseinheiten 22, 22 '; 24, 24 'are pressed against the carrier drum 16. The next drum 14 is then pressed against the carrier drum 16 again via the respective other pressing unit.

A respective drum 14 is guided during the entire winding structure along a linear axis running through the support drum axis and perpendicular to this, while the pressing unit 22, 22 'or 24, 24' is movable parallel to it during the entire winding structure. The drum 14 can be driven during the entire winding structure by the respective drive unit 22, 22 'or 24, 24' associated center drive 26 and 28 respectively.

In the present embodiment, the spool 14 is guided horizontally, and the two Anpresseinheiten 22, 22 '; 24, 24 'are each horizontally movable.

The two pressing units can each comprise two contact slides 22, 22 'or 24, 24', one of which is arranged on the driver's side and the other on the drive side. In this case, the relevant center drive 26 or 28 one of the two contact carriages 22, 22 '; 24, 24 'assigned.

The contact carriages 22, 22 '; 24, 24 'may be guided on preferably horizontal guide rails 34. In this case, these contact slides are guided, for example, by means of linear roller guides 36 on the guide rails 34. - -

The winding device 10 comprises a driver-side and a drive-side frame 38. In this case, one of the two contact slides 22 '; 24 'of a respective pressing unit on the inside of one of the two stalls 38 and the other pressure slide 22; 24 on the outside of the other chair 38 each guided on guide rails 34. The relevant center drive 26 or 28 is assigned to the outer contact slides 22, 24 respectively.

In a respective contact carriage 22, 22 '; 24, 24 'may be a perpendicular to the direction of travel of the pressure carriage and perpendicular to the spool axis movable guide carriage 40, 40'; 42, 42 'be provided for centering recording of the relevant Tambourlagers 44. In the present embodiment, the guide carriage is vertically movable. In this case, the guide carriage can in particular be mounted on the contact carriage via a linear roller guide 46.

The guide carriage 40, 40 '; 42, 42 'may in particular via at least one actuating element such as in particular at least one hydraulic cylinder or hydraulic cylinder / piston assembly 48, 48'; 50, 50 'be moved.

The Anpressschlittenpaar 22, 22 '; 24, 24 'of a respective pressing unit, a carriage drive 52; Be assigned 54, via drive elements 56, 56 '; 58, 58 'on the Anpressschlitten 22, 22', 24, 24 'acts.

The arranged on the driver's side or drive side slide drive 52; 54 of a respective Anpressschlittenpaares can via a first on the same side as the carriage drive 52; 54 arranged drive element 56; 58 on the provided on this page Anpressschlitten 22; 24 and via a transverse shaft 60; 62 and a drive element 56 'arranged on the other side; 58 'on the provided on the other side Anpressschlitten 22'; 24 'act.

The winding device 10 may in particular be designed so that the carriage drive 52; 54 one of the two Anfahrschlittenpaare 22, 22 '; 24, 24 'or - -

Drive units on the driver's side and the carriage drive 52; 54 of the other Anpressschlittenpaares or Anpresseinheit is arranged on the drive side.

In the present embodiment, the drive elements comprise drive chains 56, 56 '; 58, 58 '. Each drive chain can have its own chain tensioner 64, 64 '; Be assigned 66, 66 '. In principle, however, other drive elements such as toothed belts may be provided.

The contact carriages 22, 22 '; 24, 24 'can be driven, for example, via at least one spindle gear with transverse shaft.

The contact carriages 22, 22 '; 24, 24 'can also be assigned in each case a single drive. In particular, in this case, the Anpressschlitten example, each be driven via a rack.

The winding device 10 may include a particular electronic control and / or regulating device (not shown).

For controlling and / or regulating the drive carriage movements and / or for positioning the drive carriages, each carriage drive 52; 54 an angle encoder 68 connected in particular to the control and / or regulating device; 70 assigned.

In the present embodiment, a respective center drive 26; 28 on the respective contact carriage 22; 24 or the associated guide carriage 40; 42 guided in particular displaceably via a linear roller guide 72 in the transverse direction.

The carrier drum 16 can be mounted on measuring cells 74 that can be connected, in particular, to the control and / or regulating device, by means of which the force with which the spool 14 or the winding 18 to be formed thereon is pressed against the carrier drum 16 can be measured. - -

For transferring a respective new spool 14 from a spool magazine (not shown) arranged above the winding device 10 to the correspondingly positioned guide carriages 40, 40 '; 42, 42 'of a respective Anfahrschlitten- pair 22, 22'; 24, 24 ', a movable lift arms 76 comprehensive Tambourlift 78 may be provided.

The drum lift 78 may be associated with a drum starter to a respective new drum 14 before the transfer to the respective pressing unit 22, 22 '; 24, 24 'or their guide carriage 40, 40', 42, 42 'to accelerate.

In an outlet region 80 of the winding device 10, the driver-side and the drive-side frame 38 may be provided with rails 82 inclined relative to the horizontal, to which the finished and in particular braked winding 18 can be placed in order to feed it to a stop device 84.

The control and / or regulation of the winding structure can also take place at least partially via the force with which the spool 14 or the winding 18 to be formed thereon is pressed against the carrying drum 16. However, it is also conceivable that the control and / or regulation of the winding structure takes place at least partially over the path traveled by the spool 14 or by the winding 18 to be formed thereon. In addition, such an embodiment is conceivable, for example, in which the control and / or regulation of the winding structure takes place via the path covered by the spool 14 or by the winding to be formed thereon only from a prescribable winding diameter.

For example, such an embodiment of the winding device 10 is also conceivable, in which the guide carriages 40, 40 '; 42, 42 'are provided only for guiding the spool 14 and the spool 14 is supported during the winding structure by rails. In this case, for example, the rails 82 can be guided horizontally at least substantially into the region of the carrier drum 16. - -

The winding device 10 can thus be designed, for example, as follows:

There are provided a driver-side and a drive-side frame 38, wherein on the inside and outside of the Anpressschlitten 22, 22 '; 24, 24 'are guided on horizontally arranged guide rails 34 by means of linear roller guides 36. In the contact carriage are vertically displaceable guide carriage

40, 40 '; 42, 42 'mounted on linear roller guides 46. These guide slides are by means of hydraulic cylinders or hydraulic cylinder / piston assemblies 48, 48 '; 50, 50 'moves. The guide carriages are designed to accommodate and support a spool 14 centered on the barrel bearing 44.

It forms in each case an outer contact slide 22; 24 with the opposed inner pressure slide 22 '; 24 'a functional or Anpresseinheit. Each functional unit formed by a respective pair of carriages has a carriage drive 52; 54, via drive chains 56, 56 '; 58, 58 'acts on the drive carriage, wherein in each case a transverse shaft 60; 62 ensures the synchronization of the carriage of a respective pair of carriages. Each chain is equipped with its own chain tensioner 64, 64 '; 66, 66 'equipped.

For controlling and / or regulating the drive carriage movements and for exact positioning, each carriage drive is provided with an angle encoder 68; 70 assigned. Each carriage pair has a center drive 26; 28, which may be provided in particular in the manner of a "Voith-Drive" -Zumumsanthebs and is guided on the respective outer drive carriage in the transverse direction slidably on linear roller guides 72.

The carrier drum 16, via which the material web 12 is fed to the winding process, is mounted on measuring cells 74. A Tambourlift 78 with movable lift arms 76 takes over the reels from a arranged on the winding device reel magazine (not shown) and leads them to the appropriately positioned guide carriage. In an outlet region 80 of the winding device 10 is the - -

Stung with inclined rails 82 provided on the finished wound coil 18 is placed after braking and the stopper 84 is supplied.

The functional sequence of such an exemplary embodiment of the winding device 10 can in particular be as follows: The drum lift 78 lifts with the lift arms 76 a new spool 14 from the spool magazine and lowers it into the raised guide carriages 40, 40 'of the positioned pair of thrust carriages 22, 22'. The tambour still has no contact with the carrier drum 16.

The center drive 26 is engaged by sliding in the transverse direction in the provided for example in the form of a drive bell rotary drive connection of the spool, and the spool is then accelerated to machine speed.

The driven by the slide drive 52 Anpressschlittenpaar now moves the drum to the carrier drum and presses him with a defined, preferably regulated force. The actual force value is determined by the measuring cell or measuring cells 74 under the carrier drum 16 and fed into the control.

The material web 12 is now fed to the carrier drum by cut in the upstream machine section a transfer strip on the edge of the web and is guided with appropriate transfer devices on the carrier drum through the press or winding nip between the carrier drum and drum. Thereafter, the strip is widened to the total web.

The running on the carrier drum material web is then transferred by means of a turn-up or Aufführsystems on the spool. The turn-up or the feeding of the web can be done by moistening the spool or by applying an adhesive tape or spray adhesive on the spool. Alternatively or additionally, the web can also be separated and listed by a web-wide Trennblasrohr under the spool. - -

After the turn-up, the entire winding process takes place up to the full winding 18, for example, with controlled contact force and defined center torque (controlled speed).

After reaching a certain winding diameter, the Anpressschlittenpaar 24, 24 'with lowered guide slide 42, 42' under the active drum through in the direction of the carrier drum in the Tamboureinlegeposition be moved. Once there, the guide carriages are lifted into the working position by means of the hydraulic cylinders or hydraulic cylinder / piston arrangements 50, 50 ', in which they are ready to receive the next drum.

When the winding 18 has reached the desired diameter, it is moved away from the carrying drum by a predeterminable amount and continues to be wound there centered. During this time, a new spool, which is already in waiting position on the carrier drum in the Tambourlift, inserted into the waiting guide slide pair 42, 42 ', accelerated with the center drive 28 to machine speed and applied to the carrier drum, as already in connection with the previous drum was described. In this process, the web slides for a short time on the not yet rotating drum (bowing).

The transfer of the material web to the new drum (turn-up) is carried out as described above.

The finished winding is now braked by the center drive 26, lowered by lowering the guide carriage 40, 40 'on the rails 82 and released. The winding now runs on the Tambourlagern on the inclined rails 82 to the stopper 84th

If the Tambourlift is equipped with a Tambourstarter to the tambour before insertion into the guide slide on machine speed - -

To accelerate, so shortening the free winding time for the full role, and the train does not have to slide over the not yet rotating drum.

As already mentioned, alternative drives of the contact carriages can comprise, for example, toothed belts instead of drive chains, spindle drives with transverse shaft and / or a system with rack and single drive on each carriage (electronic synchronization).

In certain cases, it may also be advantageous to perform the winding structure not force-controlled, but path-controlled, for example, with a defined carriage path per number of winding or material web layers.

It is also conceivable, for example, such a variant, in which the path control takes place only from a certain winding diameter.

For example, the guide carriages can only serve to guide the drums, in which case they do not carry their weight. The tambourines are instead carried by rails, which then extend to the carrier drum. This brings with it the advantage of a largely symmetrical loading of the drum bearings. In the case of a line force control, however, due to the rolling friction on the rails, the sensitivity of the control can be influenced. In a path-controlled winding structure, this does not matter.

The center drives can also be realized as conventional drives mounted independently of the drive carriages.

In order to avoid as far as possible the drawbacks of the free-spinning known to the person skilled in the art, especially with low grammages, a pressing element 90, in particular a pressure roller, is provided in the present embodiment, which is applied to the winding 18 - -

to reduce the air inlet between the material web layers and to stabilize the full winding 18.

Figure 4 shows a schematic partial representation of an exemplary embodiment of a system 86 for driving a drum 14 in a winding device, in which a material web, in particular paper, board or tissue web is wound on the spool 14, the web to the spool 14 via a carrier drum can be supplied and a winding nip is formed between the carrier drum and the spool 14 and the winding to be formed thereon.

The drive system 26 comprises at least one center drive 26; 28, which has a rotor provided with an electric motor, coaxial with the drum 14 in association with an axial end portion of the main cylinder 14 is positionable and by moving the center drive in the axial direction of the main cylinder 14 and / or by a relative movement between a rotary drive connection of the center drive 26; 28 and the rotor without gear directly to the spool 14 or a rotary drive connection 32 associated therewith can be coupled.

The center drive 26; 28 can with a contact carriage 22, 22 '; 24, 24 'be combined, via which the spool 14 and the winding to be formed thereon can be pressed against the support roller. In this case, the center drive 26; 28 and the pressing carriage 22, 22 '; 24, 24 'be shared.

The center drive 26; 28 may be combined with a secondary carriage assigned to a secondary winding area or with a primary carriage assigned to a primary winding area.

The rotary drive connection associated with the spool 14 may comprise a drive coupling or bell. The rotary drive connection 30 of the center drive 26; 28 may in particular comprise a drive train. - -

The rotor of the center drive comprises, for example, a hollow motor shaft. In this case, the center drive 26; For example, be coupled by a relative movement between the drive train and the hollow shaft motor with the spool 14 and the associated rotary drive terminal 32.

For example, it is also possible to provide a center drive both on the driver's side and on the drive side.

The two center drives arranged on different sides can have a different engine characteristic. Thus, one of the two center drives, for example, a relatively smaller torque at relatively higher speeds for a predetermined lower winding diameter range and the other center drive generate a relatively larger torque at relatively lower speeds for a predetermined upper winding diameter range.

At least one center drive 26 is preferred; 28 associated with a secondary winding area. For example, at least one center drive may also be associated with a primary winding area. In this case, for example, such an embodiment is conceivable in which both a primary winding area and a secondary winding area are each assigned at least one center drive.

The center drives 26; 28 can thus each be again provided in the manner of a "Voith Drive" center.

In addition, FIG. 4 again shows a chair 38 and linear roller guides 72, via which a respective center drive 26; 28 is movable in the transverse direction to allow engagement or disengagement of, for example, a drive train comprehensive rotary drive connection. This can be assigned to the center drive rotary drive connection 30th - -

For example, in a comprehensive Anhebskupplung or bell rotary drive terminal 32 of the main cylinder 14 are engaged.

As can be seen from Figure 4, the center drive 26; 28 may be arranged on a motor slide 88, which is correspondingly movable in the transverse direction via the slide or linear roller guide 72.

It is thus provided a center drive with low mass and small footprint. In this case, for example, those variants are conceivable in which results by a two-sided arrangement of the drives a symmetrical force application. In addition, variants with different engine characteristics on the leading side and the drive side are conceivable.

The drive system 36 can be used with particular advantage, in particular also in the winding device 10 according to the invention.

The center drives of the winding device according to the invention and of the drive system according to the invention are, as already stated, preferably designed as a "Voith Drive" center elevation.

- -

LIST OF REFERENCE NUMBERS

10 winding device

12 material web 14 Tambour

16 carrier drum

18 wraps

20 winding gap

22 contact carriage 22 'contact carriage

24 contact carriages

24 'contact carriage

26 center drive

28 Center drive 30 Rotary drive connection

32 rotary drive connection

34 guide rail

36 linear roller guide

38 staging 40 guide carriages

40 'guide carriage

42 guide carriages

42 'guide carriage

44 Drum Bearing 46 Linear Roller Guide

48 Hydraulic cylinder / piston arrangement

48 'Hydraulic cylinder / piston arrangement

50 Hydraulic cylinder / piston arrangement

50 'Hydraulic Cylinder / Piston Arrangement 52 Carriage Drive

54 carriage drive

56 Drive element, drive chain - -

6 'drive element, drive chain

58 Drive element, drive chain 8 'drive element, drive chain

60 cross shaft

62 cross shaft

64 Chain Tensioner 4 'Chain Tensioner

66 Chain tensioner 6 'Chain tensioner

68 angle encoder

70 angle encoder

72 linear roller guide

74 measuring cell

76 lift arm

78 Tambour lift

80 outlet area

82 Running track

84 stopping device

86 drive system

88 snowmobiles

90 pressing element; capstan

Claims

Method and device for winding a material web patent claims

1. A method for winding a material web (12), in particular paper, cardboard or tissue web, on a spool (14), in which the material web (12) to the spool (14) via a carrier drum (16) and fed between the carrier drum (16) and the spool (14) or the winding to be formed thereon (18) formed a winding nip (20) and in this a line force is generated, characterized in that the effective direction of the line force generated in the winding nip (20) throughout the Winding structure is kept at least substantially constant.

2. The method according to claim 1, characterized in that the spool (14) and thus the winding to be formed thereon (18) during the entire winding structure via one and the same pressing unit (22, 22 ', 24, 24') to the carrier drum ( 16) is pressed.

3. The method according to claim 1 or 2, characterized in that the spool (14) during the entire winding structure via one and the same center drive system (26; 28) is driven.

4. The method according to any one of the preceding claims, characterized - -

that the spool (14) is guided so that the two mutually parallel axes of the spool (14) and the carrier drum (16) remain in one and the same plane during the entire winding structure.

5. The method according to claim 4, characterized in that the spool (14) is guided so that the two mutually parallel axes of the spool (14) and the carrier drum (16) remain in a horizontal plane during the entire winding structure.

6. Device (10) for winding a material web (12), in particular paper, board or tissue web, on a spool (14), wherein the material web (12) to the spool (14) via a carrier drum (16) can be fed and between the carrier drum (16) and the spool (14) or the winding to be formed thereon (18), a winding nip (20) is formed, in particular for

Carrying out the method according to one of the preceding claims, characterized in that the spool (14) and thus the winding to be formed thereon (18) to the carrier drum (16) pressed and the spool (14) is guided so that the effective direction of Line force generated in the winding nip (20) is kept at least substantially constant during the entire winding structure.

7. Device (10) according to claim 6, characterized in that the spool (14) and thus the winding to be formed thereon (18) during the entire winding structure via one and the same pressing unit (22, 22 ', 24, 24') the carrier drum (16) can be pressed.

8. Device (10) according to claim 6 or 7, characterized in that the spool (14) during the entire winding structure via one and the same center drive system (26; 28) is drivable. - -

9. Device (10) according to any one of the preceding claims, characterized in that the spool (14) is guided so that the two mutually parallel axes of the spool (14) and the carrier drum (16) during the entire winding structure in one and the same Remain level.

10. Device (10) according to claim 9, characterized in that the spool (14) is guided so that the two parallel to each other

Axes of the main cylinder (14) and the carrier drum (16) remain in a horizontal plane during the entire winding structure.

11. Device according to one of the preceding claims, characterized in that it comprises two movable Anpresseinheiten (22, 22 ', 24, 24'), via which the spool (14) and thus the winding to be formed thereon (18) respectively to the Cartridge (16) is pressed and each of which a center drive (26; 28) is associated, comprising a rotor provided with an electric motor, coaxial with the spool (14) in association with an axial end portion of the spool (14) is positionable and by methods in the axial direction of the main cylinder (14) and / or by a relative movement between a rotary drive connection (30) of the center drive (26; 28) and its rotor without gear directly to the tambour (14) or a latter a respective spool (14) during the entire winding structure only on one of the two Anpresseinheiten (22, 22 ', 24, 24') to the support drum (16) can be pressed and ü About the respective other pressing unit only the next spool (14) is pressed against the carrier drum (16), a respective spool (14) during the entire

Winding structure along a guided through the support drum axis and perpendicular to this linear path is guided and the relevant - -

Pressing unit (22, 22 'or 24, 24') during the entire winding structure to be moved parallel thereto, wherein the spool (14) during the entire winding structure by the respective pressing unit (22, 22 'or 24, 24') associated Center drive (26 or 28) can be driven.

12. Device (10) according to any one of the preceding claims, characterized in that the spool (14) is guided horizontally and both pressing units (22, 22 ', 24, 24') are each movable horizontally.

13. Device (10) according to one of the preceding claims, characterized in that the two contact units each comprise two contact slides (22, 22 ', 24, 24'), one of which is arranged on the driver's side and the other on the drive side, and that the center drive in question (26 or 28) is assigned to one of the two contact slides (22, 24).

14. Device (10) according to claim 13, characterized in that the contact slides (22, 22 ', 24, 24') preferably horizontal

Guide rails (34) are guided.

15. Device (10) according to claim 14, characterized in that the contact slides (22, 22 ', 24, 24') by means of linear roller guides (36) on the guide rails (34) are guided.

16. Device (10) according to one of the preceding claims, characterized in that a driver-side and a drive-side seat (38) are provided, that one of the two Anfahrschlitten (22 ', 24') of a respective Anpresseinheit on the inside of one of the two stalls (38) and the other - -

Pressing carriage (22; 24) is guided on the outside of the other frame on a respective guide rail (34), and that the relevant central lifting element (26 or 28) is associated with the outer pressing slide (22; 24).

17. Device (10) according to one of the preceding claims, characterized in that in a respective contact carriage (22, 22 '; 24, 24') a perpendicular to the direction of travel of the contact carriage and perpendicular to the spool axis movable guide carriage (40, 40 ', 42 , 42 ') is provided for centering receiving the relevant Tambourlagers (44), wherein the guide carriage is preferably moved vertically.

18. Device (10) according to claim 17, characterized in that the guide carriage (40, 40 ', 42, 42') via a linear roller guide (46) is mounted on the contact slide.

19. Device (10) according to claim 17 or 18, characterized in that the guide carriage (40, 40 ', 42, 42') via at least one actuating element, in particular at least one hydraulic cylinder / piston arrangement (48, 48 ', 50 , 50 ') is movable.

20. Device (10) according to any one of the preceding claims, characterized in that the Anfahrschlittenpaar (22, 22 ', 24, 24') of a respective Anpresseinheit a carriage drive (52; 54) is assigned, which via drive elements (56, 56 '. 58, 58 ') acts on the contact slides (22, 22', 24, 24 ').

21. Device (10) according to claim 20, characterized in that - -

in that the carriage drive (52; 54) arranged on the driver's side or drive side projects over a first drive element (56; 58) arranged on the same side as the carriage drive (52; 54) onto the contact carriage (22; Transverse shaft (60; 62) and arranged on the other side drive element (56 '; 58') on the provided on the other side Anpressschlitten (22 '; 24') acts.

22. Device (10) according to claim 20 or 21, characterized in that the carriage drive (52; 54) one of the two Anpressschlittenpaare

(22, 22 ', 24, 24') or pressing units on the driver's side and the carriage drive (52, 54) of the other contact carriage pair or pressing unit on the drive side is arranged.

23. Device (10) according to any one of claims 20 to 22, characterized in that drive elements drive chains (56, 56 ', 58, 58') comprise.

24. Device (10) according to claim 23, characterized in that each drive chain (56, 56 ', 58, 58') is associated with its own chain tensioner (64, 64 ', 66, 66').

25. Device (10) according to any one of claims 20 to 22, characterized in that the drive elements comprise toothed belts.

26. Device (10) according to one of the preceding claims, characterized in that the contact slides (22, 22 ', 24, 24') can be driven via at least one spindle drive with transverse shaft. - -

27. The device (10) according to any one of the preceding claims, characterized in that the pressure rollers (22, 22 ', 24, 24') each having a single drive is assigned and the contact slides (22, 22 ', 24, 24') preferably each are driven by a rack.

28. Device (10) according to any one of the preceding claims, characterized in that it comprises a particular electronic control and / or regulating device.

29. Device (10) according to claim 28, characterized in that for controlling and / or regulating the drive carriage movements and / or for positioning the drive carriages (22, 22 ', 24, 24') each

Carriage drive (52; 54) is associated with a connected to the control and / or regulating device Winkelcodierer (68; 70).

30. Device (10) according to one of the preceding claims, characterized in that a respective center drive (26; 28) on the relevant contact slide (22; 24) or the associated guide carriage (40; 42) in particular via a linear roller guide (72 ) is guided displaceably in the transverse direction.

31. Device (10) according to one of the preceding claims, characterized in that the carrier drum (16) is mounted on connected to the control and / or regulating device measuring cells (74), via which the force is measurable, with the tambour ( 14) or the winding to be formed on the carrier drum

(16) is pressed. - -

32. Device (10) according to one of the preceding claims, characterized in that in order to transfer a respective new spool (14) from a spool magazine arranged above the winding device (10) to the correspondingly positioned guide carriages (40, 40 '; 42 ') of a respective

Anpressschlittenpaares (22, 22 '; 24, 24') and Anpresseinheit a movable lift arms (76) comprehensive Tambourlift (78) is provided.

33. Device (10) according to claim 32, characterized in that the drum carrier (78) is assigned a drum starter in order to move a respective new drum (14) before it is transferred to the respective pressing unit (22, 22 ', 24, 24'). ) or their guide carriage (40, 40 ', 42, 42') to accelerate.

34. Device (10) according to one of the preceding claims, characterized in that the driver-side and the drive-side frame (38) are provided in an outlet region (80) with respect to the horizontal inclined rails (82) hen on which the finished and in particular, braked winding (18) can be placed in order to supply it to a stop device (84).

35. Device (10) according to one of the preceding claims, characterized in that the control and / or regulation of the winding structure takes place at least partially on the force with which the spool (14) or the winding to be formed thereon (18) to the Carrying drum (16) is pressed.

36. Device (10) according to one of the preceding claims, characterized - -

the control and / or regulation of the winding structure takes place at least partially over the path traveled by the spool (14) or by the winding (18) to be formed thereon.

37. Device (10) according to claim 35 or 36, characterized in that the control and / or regulation of the winding structure over the tambour (14) or of the winding to be formed thereon (18) path is carried out only from a predetermined winding diameter ,

38. Device (10) according to one of the preceding claims, characterized in that the guide slides (40, 40 ', 42, 42') provided only for guiding the spool (14) and the spool (14) supported during the winding structure by rails is.

39. System (86) for driving a spool (14) in a winding device, in particular in a winding device according to one of the preceding claims, in which a material web, in particular paper, board or tissue web, is wound on the spool (14), the material web the

Tambour (14) can be supplied via a carrier drum and a winding nip is formed between the carrier drum and the spool (14) or the winding to be formed thereon, in particular for the winding device according to one of the preceding claims, with at least one center drive (26; rotor comprising an electric motor provided with a rotor, coaxial to the spool (14) positionable in association with an axial end portion of the spool (14), and by moving the sprocket in the axial direction of the spool (14) and / or by relative movement between a rotary drive connector (30) of the center drive (26; 28) and whose rotor can be coupled without gear directly to the spool (14) or to a rotary drive connection (32) associated therewith. - -

40. Drive system (86) according to claim 39, characterized in that the center drive (26; 28) is combined with a contact slide (22, 22 '; 24, 24'), via which the spool (14) or the spool to it forming winding to the support roller is pressed, the center drive and the

Contact carriage are performed together.

41. Drive system (86) according to claim 40, characterized in that the center drive (26; 28) is combined with a secondary carriage associated with a secondary winding area.

42. Drive system (86) according to claim 40, characterized in that the center drive (26; 28) is combined with a primary carriage associated primary carriage.

43. Drive system (86) according to any one of claims 39 to 42, characterized in that the Tambour (14) associated Drehanthebsanschluss (32) a

Drive coupling or bell covers.

44. Drive system (86) according to any one of claims 39 to 43, characterized in that the Drehanthebsanschluss (30) of the center drive (26;

Drive star comprises.

45. Drive system (86) according to one of claims 39 to 44, characterized in that the rotor comprises a motor hollow shaft.

46. Drive system (86) according to claim 45, - -

characterized in that the center drive (26; 28) can be coupled by a relative movement between the drive star and the hollow motor shaft with the spool or the Drehanthebsanschluss associated therewith.

47. Drive system (86) according to any one of claims 39 to 46, characterized in that a center drive is provided both on the driver's side and on the drive side.

48. Drive system (86) according to claim 47, characterized in that the two arranged on different sides center drives have a different engine characteristics.

49. Drive system (86) according to claim 48, characterized in that one of the two center drives a relatively smaller torque at relatively higher speeds for a predetermined lower Wickeldurchmes- serbereich and the other center drive a relatively larger torque at relatively lower speeds for a predetermined upper winding diameter range generated.

50. Drive system (86) according to one of claims 39 to 49, characterized in that at least one center drive (26; 28) is associated with a secondary winding area.

51. Drive system (86) according to one of claims 39 to 50, characterized in that at least one center drive is associated with a primary winding area. - -

52. Drive system (86) according to one of claims 39 to 51, characterized in that each of a primary winding area and a secondary winding area is assigned in each case at least one center drive.